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22-50-7 Grade 140

China SY/T 22-50-7Grade140 耐蚀合金套管和油管 and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals 22-50-7 Grade 140 SY/T 6950 China 耐蚀合金套管和油管

Chemical composition(mass fraction)(wt.%) of the 22-50-7 Grade 140

Element Min Max Similar
Mo - 7.0000 -
Ni - 50.0000 -
Cr - 22.0000 -
C - 0.0200 -

Mechanical Properties of steel grade 22-50-7 Grade 140

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
771 (≥) 279 (≥) 43 11 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade 22-50-7 Grade 140

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
24 - -     0.14 -  
813 471 - 42.3 321   -  
365 - 32 23.2   332 144

Heat Treatment of steel grade 22-50-7 Grade 140

Heat treated : 1786°C - 1267°C

Technological Curves of steel grade 22-50-7 Grade 140

Cross Reference Table (Equivalent Grade) of 22-50-7 Grade 140

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